The weight table of the dead weight tester must be level and stable before a gauge is calibrated with the tester. Ravika instruments, with its inhouse manufacturing range from last 5 decades, offers customers complete, comprehensive and absolute calibration lab packages. May 12, 2017 manual deadweight tester nonelectronic deadweight tester or hydraulic deadweight tester is a bench use reference standard for calibrating pressure gauges. Pressure calibration points produced by the deadweight tester are accurate to within 0. Pneumatic deadweight tester model cpb3500 pneumatic deadweight tester, model cpb3500 description proven primary standard the model cpb3500 deadweight tester is a genuine primary standard, which derives the measurement of pressure directly from its fundamental equation p fa. Make sure there is 23 oil level in oil reservoir cup. The following procedure is adopted for calibrating pressure gauges. Model dwt5 deadweight testers are dual range, precision built hydraulic instruments for testing, setting, calibrating or repairing pressure measuring devices. Jan 28, 2015 instruction manual dwt mtr experience 2000 bar duration.
Setup 4 type t hydraulic deadweight tester operation manual 5 from one side of the pressure manifold, remove the union nipple, nut, and oring. Pneumatic dead weight tester model cpb3500 pneumatic dead weight tester, model cpb3500 description proven primary standard the model cpb3500 dead weight tester is a genuine primary standard, which derives the measurement of pressure directly from its fundamental equation p fa. Motor drive accessory to achieve optimum sensitivity, friction between the piston and the cylinder of the tester must be minimized while these parts are sliding vertically to indicate a pressure weight imbalance. This online tool will calculate the required mass to be added to a dead weight tester pressure calibrator by entering the target pressure, the effective area of the pistoncylinder and the local gravity. This includes all 580l580m580dx and 580hx instruments and are identical in form, fit, function, specification and quality. Deadweight testers use calibrated weights to apply known pressures to a device under test for a simple and costeffective solution that covers a wide range of pressure calibrations. The p3100 series is the culmination of over 50 years of experience in the production and design of high performance pressure standards. Users manual, user handbooks and a brochure datasheet from 2003 for w2200 series deadweight testers. Installation and maintenance manual for the ashcroft type. Dead weight testers hydraulic dead weight testers accuracy better then 0. Our wide range of products include dead weight pressure gauge testers, dead weight vacuum gauge testers, comparison test pumps for pressure, comparison test pumps for vacuum. The units builtin shuttle valve provides the means to control the rate of pressure increase, while precision adjustment is accomplished with an integral micro vernier. There fore the device is called dead weight tester.
Operation manual for dead weight tester page 3 of 4 operating instruction. Dhsbudenberg 580 series hydraulic deadweight testers. Ashcroft 5d installation and maintenance manual pdf download. A deadweight tester is a calibration standard that uses the principle of a pressure balance to calibrate pressure measuring instruments. Deadweight testers pressure calibration fluke calibration.
The ashcroft type 5d dual range deadweight testers are precision built primary pressure standards, used for testing, setting, calibrating or repairing pressure measuring devices within the test points 15 psi 100kpa to 10,000 psi 70,000kpa. How a dead weight tester works learning instrumentation and. The 2400 was the original of the high pressure liquid filled deadweight testers by ruska. How a deadweight tester works to generate pressure for calibration and demonstration of the mensor deadweight tester model cpb5000 and the cpu5000 control unit that automatically senses. Gauge calibration means entering a precisely known pressure sample into the manometer under test and then observing the response of the manometer. Pressure equals the weight force divided by the effective area of the ball.
The ashcroft 5d and 5dh deadweight testers provide a precise means for generating pressure with high accuracy that can be used as a primary calibration standard. Manual deadweight tester nonelectronic deadweight tester or hydraulic deadweight tester is a bench use reference standard for calibrating pressure gauges. Deadweight tester selection guide irish power and process. Also includes m1800, m1900, m2000, m2100, m2200, m2800, m2820, m3800, m3820, m4000, w1800, w2000, w2200. Pit5000 digital deadweight tester rental the trusted.
When the base unit is used in the cpp120x configuration with a high accuracy standard test gauge, it provides a simple to use comparator. For precision calibration of gauges see dead weight tester. Symbols used on the hydraulic deadweight tester and in this manual are explained in. Remove the union nipple, nut, and oring then replace with the plug and oring. A deadweight tester consists of a pumping piston with a screw that presses it into the reservoir containing a fluid like oil, a primary piston that carries the dead weight, w, and the pressure gauge or transducer to be calibrated as shown in the schematic above. Current model are the p3100, p3200 and p3800 series deadweight testers. Calibration is done against master dead weight pressure gauge tester certified and characterised by national physical laboratory, new delhi using crossfloat method. The 2400 is discontinued and has reduced support capability from fluke calibration. With features designed to improve accuracy and performance, increase reliability and simplify operation these deadweight testers can be used to calibrate virtually any pressure sensing device, including transducers, transmitters, gauges or pressure switches. The pit5000 incorporates our proven, nisttraceable pressure and temperature measurement technology with our patented system to provide reliable, automated data collection and. The pressure datum of the tester is marked on the piston units. Dwt dead weight tester works based on the principle of pascals law.
Feb 01, 2014 each weight is stamped with the equivalent amount of force that will be exerted on a predetermined area of piston cylinder arrangement by using that weight. Level the tester on a strong table top using sprit level and adjusting the level screws. Ashcroft installation and maintenance manual for the ashcroft type 5d deadweight tester and type 27d portable pump. Deadweight testers model p3000 the pressurements 3000 series is the culmination of over 50 years experience in the production and design of primary pressure standards. How to calibrate a pressure gauge with a dead weight tester. Type t hydraulic deadweight tester operation manual overview introduction all models of type t deadweight testers ship as complete kits, in ranges from 1 to 30 bar 10 to 500 psi through 7 to bar 100 to 15 000 psi. This is useful when calibrating a wide range of devices by allowing for more discrete pressure set points. Any model 580c comparator can be converted to any deadweight tester by the addition of the appropriate pistoncylinder unit and weights and any deadweight tester can be converted to a model 580c comparator with the addition of an extra gauge stand. Any model 580c comparator can be converted to any dead weight tester by the addition of the appropriate pistoncylinder unit and weights and any dead weight tester can be converted to a model 580c comparator with the addition of an extra gauge stand.
Gauge, pressure terriss consolidated industries, inc. The following procedure is adopted to calibrate manometers. Gauges do you want the instrument to test the unknown pressure of a pipeline. The weight masses are premeasured and identified with the pressure values they produce when operated with the interchangeable piston and cylinder assemblies. Aug 10, 2010 how a deadweight tester works to generate pressure for calibration and demonstration of the mensor deadweight tester model cpb5000 and the cpu5000 control unit that automatically senses. Pman1171d01, m1800,m2000,m2200,m2800,w models also.
Deadweight tester utilizes a set of weights in a mechanical and piston driven assembly in order to achieve a pressure reading. Dead weight testers dead weight testers for hydrotesting gravity. Any model bgh1200c comparator can be converted to any dead weight tester by the addition of the appropriate pistoncylinder unit and weights and any dead weight tester can be converted to a model bgh1200c comparator. Dead weight tester, model cpb3800 applications primary standard for calibrating the pressure scale in a hydraulic range up to 1,200 bar reference instrument for factory and calibration laboratories for the testing, adjustment and calibration of pressure measuring instruments complete, standalone system, also suitable for onsite use. Proven primary standard the model cpb3500 deadweight tester is a genuine primary standard, which derives the measurement of pressure directly from its. The deadweight tester supplied by chandler engineering provides pressures that are referenced to standard gravity 980. To increase pressure in a hydraulic deadweight tester, a priming pump is used. All pk ii testers are shipped with tester and weight contained within a carrying case. The dead weight tester also contains an oil reservoir and an adjusting piston or screw pump.
Factory overhaul and recertification of deadweight testers. In dual pston rmdels pcij changeover from lpto hp automatically. Budenberg bgh series hydraulic deadweight testers operating and maintenance instructions budenberg gauge co ltd 4 gilchrist road, northbank industrial estate, irlam manchester, united kingdom, m44 5ay tel. The units builtin shuttle valve provides the means to control the rate of pressure increase, while precision adjustment is accomplished with an integral micro vernier displacement valve. Close the oil reservoir valve and rotate screw pump. Ametek type t hydraulic deadweight tester manual pdf instrumart. The dead weight tester is basically a device for measuring pressure and producing pressure. The ametek pk ii pneumatic deadweight tester is a primary standard that produces a pressure by applying force weight set over area the ceramic ball and nozzle. The dead weight tester measures applied pressures using the same principle as the dead weight gage. Calibration of pressure gauge means introducing an accurately known sample of pressure to the gauge under test and then observing the response of the. A dead weight tester apparatus uses known traceable weights to apply pressure to a fluid for checking the accuracy of readings from a pressure gauge. Below is an archived, uncontrolled copy of the user manual and other documents. The type t tester features a reentrant type measuring piston and cylinder assembly, which reduces the rate of fluid leakage and increases float time, helping to maintain accuracy as test pressures increase. Other gauge testers are available for field calibration.
Deadweight testers and gauges instruction manual chandler. Pressure gauge calibration using electronic deadweight. Dh budenberg hydraulic deadweight tester operating and. The deadweight tester preferably should be certified to the local gravitational force for the geographical region and use the manufacturers recommended oil. Each instrument is selfcontained and comes complete with tools and metal carrying case. This mechanical measuring principle provides superior reliability.
Setting up and operating a dead weight tester procedure for calibra ng a gage 1 posi instrumenton on the table. Proven primary standard the model cpb3500 dead weight tester is a genuine primary standard, which derives the measurement of pressure directly from its our website uses cookies. Any cpp120x comparator can be converted to any dead weight tester by the addition of the appropriate pistoncylinder unit and weights and any dead weight tester can be converted to a cpp120x comparator with the addition of an extra gauge stand. The table below shows wikas model code combinations to the corresponding 580 series models. A deadweight tester is capable of measuring pressures with much higher accuracy, provided the user applies corrections for the errors inherent in the device. View and download ashcroft 5d installation and maintenance manual online. With this combination the former 580 series deadweight tester from dhbudenberg is still available. The reservoir accumulates oil displaced by the vertical piston during calibration tests when a large range of accurately calibrated weights are used for a given gauge. Typically a dead weight tester consists of a base, screwpressregulator, pistoncylinder assembly and a mass set of weights. Deadweight tester cpb3800 with cps5800 piston unit page 2 of 15 wika data sheet ct 31. This device replaces your bulky and fragile dead weight pressure testers, pressure chart recorders, and temperature chart recorders with a rugged allinone solution. The most accurate instrument available for measurement of pressures above the range where manometers may be used is the deadweight tester. These smaller weights supplement the larger weights to produce fine incremental pressures.
Pressure gauge calibration using electronic deadweight tester. The meriam pit5000 is the premier instrument for conducting and documenting pipeline hydrostatic pressure tests. Keep oil reservoir valve open and unscrew the screw pump fully. How a dead weight tester works learning instrumentation. Operation manual for dead weight tester page 2 of 4 features. Tester specifications and lists of replacement parts are provided for the specific instruments described by this manual. Instruction manual dwt mtr experience 2000 bar duration. Residual media at the deadweight tester can result in a risk to persons, the environment and the equipment. Product description dwt5 theory of operation construction specifications product description. With features designed to improve accuracy and performance, increase reliability and simplify operation these deadweight testers can be used to calibrate virtually any pressure sensing device, including transducers, transmitters, gauges or. To assist the reader, a pk tester should be equipped with stainless steel weights, be capable of a 5500 in.
With features designed to improve accuracy and performance, increase reliability and simplify operation these deadweight testers can be. Ashcroft installation and maintenance manual for the ashcroft type 5d deadweight tester. The base has a builtin spirit level and adjustable feet to allow the user to ensure the instrument is perfectly level before use. In either configuration, the external pressure is applied to the bottom of the piston and is balanced by the mass of the weights that are added to the table.
A dead weight tester dwt is a calibration standard method that uses a piston cylinder on which a load is placed to make an equilibrium with an applied pressure underneath the piston. The formula used by this calculator to determine the required mass to be added to the dead weight tester is. Type t hydraulic deadweight tester ametek calibration. Druck pressurements m2200 transcat test, measurement. Bench type deadweight tester deadweight composition features bench type hydraulic. The pressure datum of the tester is at the base of the piston and is marked on the piston units. In the deadweight tester configuration the selected piston unit is normally screwed onto the left hand side. Instruments to 150 psi are supplied with builtin hand pumps and weights are stored within the deadweight tester case. Type t hydraulic deadweight tester operation manual. Theonly differences are the parts that comprise the pressure chambers. The dead weight tester is one of the few instruments that can be. Usdeadweight pdsa 087 898 6 5 accuracy better than 0.